City Guilds Model Questions Vol1 2023 Information Technology Question 13
Practice objective / multiple choice question 13 from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
An organization uses three independent security layers to detect cyber‑attacks. For attack type A (which occurs 60 % of the time) the detection probabilities are: firewall 0.9, IDS 0.85, backup measure 0.6. For attack type B (occurs 40 % of the time) the detection probabilities are: firewall 0.7, IDS 0.75, backup measure 0.5. Assuming the layers operate independently, what is the overall probability that a randomly occurring attack is detected by at least one layer? Give your answer to four decimal places.
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This is City Guilds Model Questions Vol1 2023 Information Technology Question 13. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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